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Round|Lab Grown|IGI

1.67ct J SI1 Round Lab Grown Diamond

ID • J/SI1 • IGI LG490176181

Shape and cutting style on the report: Round brilliant

Certificate IGI LG490176181

Diamond specifications and retailer prices

From $950 USD
As of October 30, 2026
Save $3,881 USD (80%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,831 USD at MOH London · As of October 29, 2026
View at MOH London

About this 1.67ct lab-grown round diamond

This 1.67ct lab-grown round sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG490176181 or 490176181. Listed at 11 retailers as of October 29, 2026, with prices from $950 to $4,831, a $3,881 spread on the same certified stone. MOH London lists it at $4,831. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.67
Carat
J
Color
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG490176181
Dimensions7.58 × 7.60 × 4.74 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.58 mm7.60 mm1.67 ctJ / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG490176181
Side View
Table 55.0%Crown 35.3°GirdlePavilion 40.9°Culet: NoneDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $4,831 USD|Low: $950 USD|High: $4,870 USD|Avg: $2,161 USD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 2$950 USD
Retailer 3$1,289 USD
Retailer 6$1,443 USD
Retailer 4$1,496 USD
Retailer 7$1,670 USD
Retailer 9$2,070 USD
Retailer 5$2,368 USD
Retailer 8$2,788 USD
MOH London$4,831 USD

13 data points across 9 retailers

11 retailers$950 USD to $4,831 USD

A
Cheapest Retailer
-
$950 USD
B+
Retailer 2
-
$1,289 USD
View
B+
Retailer 3
-
$1,403 USD
View
B+
Retailer 4
-
$1,443 USD
View
Final sale: no returns
B+
Retailer 5
-
$1,496 USD
View
Retailer 6
-
$1,496 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
$1,670 USD
View
B
Retailer 8
-
$2,368 USD
View
B
Retailer 9
-
$2,788 USD
View
B
Retailer 10
-
$2,804 USD
View
Most Expensive
B
MOH London
LG490176181 · Oct 29
$4,831 USD
£3,804 GBP
View
10 more retailers have this diamond
Prices start from $950 USDSave up to $3,881 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.67ct Round
$950 USD